FREQUENTLY ASKED QUESTIONS
Wearing a mask makes it much harder for those droplets to travel far enough to infect other people. In fact, according to Science News, wearing a mask can reduce virus particles by up to 80%. Another study, this time by the American Institute of Physics shows that an uncovered cough has its droplets travel an average distance of 8 feet whilst wearing a mask can reduce it to a mere 2.5 inches (6.4 centimeters).
Crucially though, it is now the law in a lot of countries to wear a mask in the shops, on public transport and even whilst merely walking down the street. Most airlines insist you wear a mask and won't let you fly unless you do. For a full list of countries that require you to wear masks - updated daily - click here.
For a really great understanding with lots of data on why masks are so beneficial to stopping the spread take a look at this.